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Expired Canadian patentCanada

Electrically conductive glass sheet

CA 1298085 C · Owner: Hasegawa, Jun · Inventors: Kawaguchi, Jun; Hasegawa, Jun

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An electrically conductive glass sheet used as a fog-resistant automotive window glass sheet. The electrically conductive glass sheet comprises a glass sheet, a pair of busbars, an electrically conductive thin film, and protective coatings. The busbars are formed in spaced relation on the surface of the glass sheet by baking electrically conductive paste printed on the surface of the glass sheet. The electrically conductive thin film formed on the surface of the glass sheet has ends or junctions connected to the busbars in overlapping relation to the surfaces of the busbars, the junctions being covered with the protective coatings. Since the junctions are covered with the protective …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 9, 1986
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298085 C
Classification (IPC)B32B17/06 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 9, 1986Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.